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Lake St. Clair

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Marine Forecast

Issued 10:30 AM EST 11 December 2025

Today Tonight and Friday.

Wind west 15 knots diminishing to west 10 this evening then becoming light early Friday morning. Wind becoming southwest 10 Friday evening.

Scattered flurries ending this evening.

Waves

Issued 10:30 AM EST 11 December 2025
Today Tonight and Friday. Waves 0.5 to 1 metre subsiding to 0.5 or less near midnight.

Extended Forecast

Issued 03:00 AM EST 11 December 2025
Saturday Wind light becoming southwest 15 knots in the morning.
Sunday Wind northwest 20 knots.
Monday Wind northwest 15 knots backing to southwest 15.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
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land station Land Station
Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EST 11 December 2025 Today Tonight and Friday At 10:30 a.m. EST today departing low 986 mb located over
southeastern Quebec.

At 10:30 a.m. EST today ridge located on a line north-south over
the Ontario - Manitoba border.
By 10:30 a.m. EST Friday ridge located on a line north-south
over Minnesota.

By 10:30 a.m. EST Friday approaching trough located on a line
north-south over the Ontario - Manitoba border.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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